Software Engineer - III

Hennessey Digital is a leading North American SEO and digital marketing agency, specializing in data-driven strategies for top-tier law firms across organic search, paid media, content, and digital PR. We operate as a fully remote, globally distributed team, focused on critical thinking and building innovative tools that provide clients with a measurable competitive advantage.

We are seeking a Software Engineer III who excels at the intersection of modern web development, automation, and artificial intelligence. In this role, you will design, build, and deploy production software to power our internal platforms, client-facing tools, and advanced AI-driven workflows. You will collaborate closely with the CTO and cross-functional teams, including Content, Digital PR, and PPC, to transform concepts into reliable, well-tested systems.

If you are passionate about developing with Large Language Models (LLMs), writing clean full-stack code, and automating manual processes, this opportunity is ideal for you.

Essential Duties/Responsibilities

• Design, develop, and maintain robust web applications and internal tools using Python (Django/Flask), JavaScript/TypeScript (React, Next.js), and/or PHP (WordPress).
• Build and integrate AI-powered features utilizing LLM APIs (OpenAI, Anthropic, etc.), encompassing prompt engineering, RAG pipelines, and agentic workflows.
• Develop and maintain CI/CD pipelines for automated testing, linting, and seamless deployment.
• Write and maintain comprehensive automated tests (unit, integration, end-to-end) to ensure high code quality and reliability.
• Build and consume RESTful APIs, and manage third-party integrations (Ahrefs, HubSpot, Google APIs, WordPress REST API).
• Contribute to frontend development, creating responsive and accessible UI components and pages.
• Collaborate with non-engineering stakeholders to translate business requirements into effective technical solutions.
• Actively participate in code reviews, architecture discussions, and technical documentation efforts.
• Monitor, troubleshoot, and optimize application performance and database queries.
• Manage cloud infrastructure and deployments on AWS (EC2, RDS, S3, Lambda, etc.).

Requirements

• 5+ years of professional software engineering experience.
• Strong proficiency in Python and JavaScript/TypeScript, with experience in at least one modern framework for each (e.g., Django + React/Next.js).
• Hands-on experience building or integrating AI/LLM-powered features into production applications.
• Solid understanding of CI/CD practices and tools (GitHub Actions, GitLab CI, or similar).
• Proven experience writing automated tests and maintaining test coverage across a codebase.
• Comfortable with frontend development, including HTML, CSS, React, or similar component-based frameworks.
• Working knowledge of relational databases (MySQL/PostgreSQL) and query optimization.
• Experience with Git, pull request workflows, and collaborative development practices.
• Familiarity with cloud platforms (AWS preferred) and containerization (Docker).
• Strong communication skills and the ability to work autonomously in a remote environment.
• Fluent in English.
• Experience with WordPress at a development level (theme/plugin development, REST API, headless setups).
• Familiarity with SEO concepts, marketing technology, or legal marketing.
• Experience with data pipelines, ETL tools (e.g., Airbyte), or analytics platforms.
• Infrastructure-as-code experience (Terraform, CloudFormation).
• Exposure to MCP servers, tool-use patterns, or AI agent frameworks.

Job Types: Full-time, Contract

Pay: 120,000.00zł - 200,000.00zł per hour

Application Question(s)

• Do you have experience building or integrating AI/LLM features (OpenAI, Anthropic, etc.) into production applications?
• Do you have hands-on experience deploying or managing applications on AWS (EC2, RDS, S3, Lambda, etc.)?
• What are your salary expectations in USD?

Experience

• Software Engineer: 5 years (Required)
• Python: 3 years (Required)
• PostgreSQL: 3 years (Required)

Work Location: Remote